1. Show that the inverse of a function is unique. If a function has an inverse, then it only has one. 2. Suppose f : A → B and g : B → C have inverses. Show that gof is invertible, and that its inverse is f-l og¬1.
1. Show that the inverse of a function is unique. If a function has an inverse, then it only has one. 2. Suppose f : A → B and g : B → C have inverses. Show that gof is invertible, and that its inverse is f-l og¬1.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Suppose f: A --> B is a function. We call g: B --> A the inverse of f if g composed with f is the identity map on A (denoted by IdA) and f composed with g is IdB. Please solve the screenshot, thank you!
![1. Show that the inverse of a function is unique. If a function has an
inverse, then it only has one.
2. Suppose f : A → B and g : B → C have inverses. Show that gof is
invertible, and that its inverse is f-l og¬1.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F306db17a-c2a3-4020-aada-7a92dff91485%2F7a65a471-8d57-4014-8107-51a291b32146%2F47hwcs.png&w=3840&q=75)
Transcribed Image Text:1. Show that the inverse of a function is unique. If a function has an
inverse, then it only has one.
2. Suppose f : A → B and g : B → C have inverses. Show that gof is
invertible, and that its inverse is f-l og¬1.
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